# Whisper vs O

The clearest difference is in-app purchases: O at none against Whisper's 4. O also leads on update cadence (every 4 days vs every 2 weeks). Whisper's advantage is device support (4 vs 1) and iOS requirement (13.0 vs 16.0). On price and ads there is nothing between them.

Both are free to download. Whisper sells 4 in-app purchases, starting at $8.99 per 7 days. O asks for nothing beyond the download.

Whisper ships an update every 2 weeks, O every 4 days. The most recent releases landed on October 22, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Whisper | O |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (203 ratings)](https://appshunter.io/ios/app/whisper-ai-chat-bot-assistant/id6445982288/reviews)** | — |
| Number of ratings | **203** | — |
| Positive reviews | 35.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 72 MB | 57 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Firebolt Online, LLC](https://appshunter.io/developer/1546760418) | [PUFin ID A/S](https://appshunter.io/developer/1614643757) |

## What reviewers say

### Whisper

[App page](https://appshunter.io/ios/app/whisper-ai-chat-bot-assistant/id6445982288)

This app serves as a versatile AI assistant, offering both conversational chat capabilities and a text-to-image generation tool. It can answer questions, assist with writing tasks like essays and articles, and create visual art from text prompts.

**Highlights:** AI chatbot for answering queries, Text-to-image generator, Writing assistant for essays and content, Personal AI assistant, AI-generated art from text, Intuitive conversational interface

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $8.99 | per 7 days |
| Monthly | $17.99 | per month |
| Yearly | $59.99 | per year |
| Lifetime | $99.99 | one-time |

**What reviewers like**

- 👍 Useful tool
- 💡 Innovative AI
- 🚀 Efficient
- 👍 Good for fun
- 👍 Great for text to image

**What reviewers complain about**

- 🐛 Defective application
- 🐛 Does not work
- 🐛 Slow and political
- 🐛 Charges immediately, nothing free
- 🐛 Not working on Mac

**Reported bugs**

- Application is always defective
- Application stopped working after payment
- Microphone in chat not working
- Application crashes often
- Error message: something went wrong

**Requested features**

- Allow use on multiple devices for lifetime license
- Improve transcript accuracy
- Allow longer audio files for transcription
- Indicate transcription progress (0-100%)
- Allow dictation


### O

[App page](https://appshunter.io/ios/app/o-key-authenticator/id6776659466)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Whisper free?

Whisper is free to download, with in-app purchases available.

### Is O free?

O is free to download, with no in-app purchases.

### Do Whisper or O have ads?

Neither Whisper nor O shows ads.

### Which is updated more often, Whisper or O?

Whisper ships an update every 2 weeks, and O every 4 days. Most recently, Whisper was updated on October 22, 2026 and O on October 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*