RoboKiller Alternative: Cost, Plans and OsmO vs RoboKiller in 2026
Short answer: choose RoboKiller if your priority is database-led spam call and text blocking, Answer Bots, and real-time screening. Consider OsmO - AI Phone Assistant if you want an assistant that can handle configured incoming calls, send transcripts, and also make outbound calls for you. Both are on iPhone and Android, and both have paid plans: RoboKiller has a free tier plus a subscription listed from US$4.99 a month, with Call Screening on its Premium+ tier, while OsmO Pro is US$9.99 in the United States after a 7-day trial. Full price breakdown below.
Last fact-checked August 1, 2026 against RoboKiller's official website, help center, and US app-store listings. Features and subscription terms can change.
What RoboKiller costs
RoboKiller has a free tier that identifies spam and lets you manage block and safe lists, and a paid subscription its public listing has carried from US$4.99 per month, with monthly and annual billing. The feature most people are shopping for when they compare these apps — real-time Call Screening, where an unknown caller is asked who they are and why they are calling — is listed by RoboKiller's help center on the higher Premium+ tier, above that entry price.
Here is each tier beside what OsmO costs, so you can price both without leaving the page.
RoboKiller
Free tier
US$0
No subscription. Described by RoboKiller's help center as its free, or “Freemium”, tier.
- Spam number identification
- Block lists and safe lists you control
- Call Screening not included
- Answer Bots not included
RoboKiller
Premium — the paid plan
from US$4.99 / month
Publicly listed entry price. Billed monthly or annually; the annual rate and your local currency are shown at checkout.
- Global spam blacklist and predictive blocking
- Audio fingerprinting
- Spam-text filtering
- Answer Bots, which keep spam callers talking to a recording
RoboKiller
Premium+
above US$4.99 / month
The tier above the entry plan. RoboKiller shows the exact Premium+ monthly and annual rate on its own pricing page and in the store purchase screen.
- Everything in the paid plan
- Real-time Call Screening — the help center lists this as a Premium+ feature
- A screening report with what the caller said
OsmO
Pro on iPhone, Basic or Premium on Android
US$9.99 / month
OsmO Pro in the United States; ₹299 in India. Android Basic and Premium run US$7.99–US$9.99. Apple and Google show your localized price before you subscribe.
- 7-day trial; some features require Premium and are not included
- Answers configured incoming calls and asks why someone is calling
- Transcript after an assistant-handled call
- Places outbound calls for you
Where these figures come from. RoboKiller's tier structure and what each tier includes were checked against its official product page and help center on August 5, 2026, and the US$4.99 entry price against its public listing; this section was last reviewed on October 6, 2026. OsmO's prices are the ones on our pricing page. Subscription prices are set per storefront and change without notice, so check the current amount on RoboKiller's own site and in the App Store or Google Play purchase screen before you subscribe.
Trials, and what stays free
- RoboKiller: the free tier is ongoing rather than a trial — it identifies spam and manages your lists, and does not include Call Screening or Answer Bots. Any introductory offer on the paid plan appears in the App Store or Google Play purchase screen you are shown.
- OsmO: free to download, with a 7-day trial. Some features require Premium and are not included in the trial. OsmO supports the United States, United Kingdom, Australia, India and Canada.
What you get at each price
The gap between these subscriptions is not the couple of dollars. It is what happens to the call.
| What you want to happen | RoboKiller tier | OsmO |
|---|---|---|
| A known spam number never rings | Identification on the free tier; blocking on the paid plan | AI screening on configured incoming calls |
| An unknown caller is asked who they are | Premium+ (Call Screening) | Included |
| A spam caller is kept talking to a bot | Paid plan (Answer Bots) | Not offered |
| A written record of what the caller said | Real-time screening report | Transcript after assistant-handled calls |
| Spam texts filtered too | Paid plan | Not offered |
| The app places a call for you | Not listed on the official pages reviewed | Included |
So the pricing question splits in two. If you want spam callers blocked and wasted, RoboKiller's paid plan is the thing you are buying, and Call Screening costs the step up to Premium+. If what you want is for the call to be answered — and sometimes placed — that is a different job, and our pricing page has OsmO's full tier breakdown by platform.
What RoboKiller does well
RoboKiller is built around spam protection. Its current official pages describe a global blacklist, predictive call blocking, audio fingerprinting, spam-text filtering, customizable block and safe lists, and Answer Bots that play recordings to spam callers. RoboKiller also offers real-time Call Screening: its help center says unknown callers can be asked for their name and reason before that information is shared with you. That corrects an older version of this article, which described RoboKiller as blocking only.
When OsmO is the better fit
OsmO is an AI phone assistant. It can handle configured incoming calls through call forwarding on your existing number, find out why someone is calling, screen obvious spam, and provide a transcript after an assistant-handled call. Its main distinction in this comparison is outbound calling: you can ask OsmO to place a call for you, while outbound calling is not listed as a RoboKiller capability on the official product and store pages reviewed for this update. OsmO is free to download; paid plans and any available trial are shown in the relevant store purchase screen.
OsmO vs RoboKiller
| Capability | OsmO | RoboKiller |
|---|---|---|
| Primary focus | AI assistance for incoming and outbound calls | Spam call and text protection |
| Known-spam protection | AI screening for configured incoming calls | Global blacklist, predictive blocking, and audio fingerprinting |
| Screens unknown callers | Yes — asks why they are calling | Yes — current help page lists Call Screening as Premium+ |
| Screening information | Transcript after assistant-handled calls | Real-time screening report with the caller's response |
| Makes outbound calls for you | Yes | Not listed on the official pages reviewed |
| Answer Bots for spam callers | No | Yes |
| Platforms | iPhone & Android | iPhone & Android |
| Subscription model | 7-day trial; some features require Premium | Free tier for identification and list controls; screening and Answer Bots require a paid plan |
App store ratings
| App | App Store rating | Google Play rating | Last app update |
|---|---|---|---|
 OsmO | 4.2 ★ (13 ratings) | 4.2 ★ (130 reviews) | Oct 29, 2026 |
 RoboKiller | 4.5 ★ (414,531 ratings) | 3.8 ★ (126K reviews) | Oct 29, 2026 |
 Truecaller | 4.4 ★ (252,810 ratings) | 4.4 ★ (29.9M reviews) | Oct 30, 2026 |
Store data last changed October 31, 2026 (US App Store and Google Play). A rating on a few hundred reviews moves faster than one on millions; an app that ships updates often is usually still being worked on.
Which option fits you?
- Choose RoboKiller if spam call and text blocking, a large spam-number database, Answer Bots, and customizable block lists are your priorities.
- Consider OsmO if you want configured incoming calls handled by an AI assistant, transcripts after assistant-handled calls, and the ability to place outbound calls for you.
- Use your phone's built-in tools if you only need basic screening or silencing and do not need a separate assistant or spam-protection subscription. iPhone users can read our neutral iOS Call Screening comparison.
Check the price before you subscribe. Subscription prices are set per storefront and change without notice, so confirm the current amount on RoboKiller’s own site and in the App Store or Google Play purchase screen.
Frequently asked questions
How much does RoboKiller cost?
RoboKiller has a free tier for spam identification and block or safe lists, and a paid subscription its public listing has carried from US$4.99 a month, billed monthly or annually. Its help center lists real-time Call Screening on the higher Premium+ tier, above that entry price. Prices are set per storefront and change, so confirm the current amount on RoboKiller's own site and in the store purchase screen. See the tier breakdown above.
What does OsmO cost compared with RoboKiller?
OsmO is free to download with a 7-day trial; some features require Premium and are not included. OsmO Pro on iPhone is US$9.99 in the United States and ₹299 in India, and Android's Basic and Premium tiers run US$7.99–US$9.99. Apple and Google show your localized price before purchase. The two subscriptions buy different things: RoboKiller blocks and bots spam callers, while OsmO answers configured incoming calls and can also place calls for you.
Is there a free RoboKiller alternative?
RoboKiller documents a free tier for spam identification and list controls. Call Screening and Answer Bots require a paid plan. OsmO offers a 7-day trial; some features require Premium and are not included. Check current plans in the purchase screen.
How is OsmO different from RoboKiller?
RoboKiller emphasizes spam call and text blocking, Answer Bots, and real-time screening. OsmO is an AI phone assistant that can handle configured incoming calls, provide transcripts after assistant-handled calls, and place outbound calls for you.
Does RoboKiller screen unknown calls?
Yes. RoboKiller's current help center says Call Screening can ask unknown callers for their name and reason, then share that information with you. Its help page describes Call Screening as a Premium+ feature.
See whether an AI phone assistant fits
OsmO is free to download on iPhone and Android. Paid plans and any available introductory trial are shown in the relevant store purchase screen.
Sources
Competitor facts were checked on August 5, 2026 using RoboKiller's official product page, free-tier help page, Call Screening help page, blocking-method help page, US Google Play listing, and US App Store listing.
Related reading: Best AI call assistant apps · Truecaller alternative · iOS 26 Call Screening vs OsmO · Whoscall alternative