Bookfast.io vs Aiko
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bookfast.io
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Service booking app for Customer A comprehensive online booking system - Designed to save time - Improve service quality - Accelerate appointment sales
Aiko
Convert audio to text locally on your device using advanced AI. Export transcriptions as subtitles and fix common errors with a word-replacement feature. Supports over 100 languages for high-quality, private transcription.
- On-device AI transcription
- OpenAI Whisper powered
- Export as subtitles
- Word replacement for corrections
- Supports 100+ languages
- Privacy-focused, no data leaves device
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High-quality on-device transcription. Easily convert speech to text from meetings, lectures, and more. The transcription is powered by OpenAI's Whisper running locally on your device. Nothing leaves your device. You can export the transcription as subtitles too. It has a word-replacement feature to let you automatically fix common mistakes. Aiko favors accuracy over speed. It does not do live transcription while recording. It does not currently have speaker detection. Try the trial first. See website. Note: Sharing from Voice Memos on iOS 26 does not work because of a iOS 26 bug outside of my control. Supports audio in 100 different languages: Afrikaans, Albanian, Amharic, Arabic, Armenian, Assamese, Azerbaijani, Bangla, Bashkir, Basque, Belarusian, Bosnian, Breton, Bulgarian, Burmese, Catalan, Chinese, Croatian, Czech, Danish, Dutch, English, Estonian, Faroese, Finnish, French, Galician, Georgian, German, Greek, Gujarati, Haitian Creole, Hausa, Hawaiian, Hebrew, Hindi, Hungarian, Icelandic, Indonesian, Italian, Japanese, Javanese, Kannada, Kazakh, Khmer, Korean, Lao, Latin, Latvian, Lingala, Lithuanian, Luxembourgish, Macedonian, Malagasy, Malay, Malayalam, Maltese, Marathi, Mongolian, Māori, Nepali, Norwegian, Norwegian Nynorsk, Occitan, Pashto, Persian, Polish, Portuguese, Punjabi, Romanian, Russian, Sanskrit, Serbian, Shona, Sindhi, Sinhala, Slovak, Slovenian, Somali, Spanish, Swahili, Swedish, Tagalog, Tajik, Tamil, Tatar, Telugu, Thai, Tibetan, Turkish, Turkmen, Ukrainian, Urdu, Uzbek, Vietnamese, Welsh, Yiddish, Yoruba The app was made possible thanks to Whisper by OpenAI and whisper.cpp by Georgi Gerganov. ■ FAQ ‣ Can I edit the text in the app? I don't plan to support any editing. Export the transcription and edit it in a proper text editor. ‣ Why is the app so large? The app delivers the highest quality transcription on the market for 100 different languages. Rather than asking why it's so large, the real question is how is it so small. ‣ Why is the transcription so slow? The app favors accuracy over speed. However, performance is expected to improve in the coming months. ‣ Why must I keep the iOS app open while it transcribes? iOS apps are fundamentally restricted from operating in the background for extended periods. ‣ Can I delete some of the languages to save space? This is unfortunately not possible. The model has all the languages stored together in a way that makes it impossible to remove just some languages. More FAQs on the website. ■ Technical details The app uses the Whisper medium or small model on iOS depending on available memory and the large v3 model on macOS. ■ Privacy The transcription is done locally on your device. Nothing leaves your device. ■ Support You can contact me through the feedback button in the app.
Screenshots
Verdict
The clearest difference is price: Bookfast.io at Free against Aiko's $24.00. Bookfast.io also leads on iOS requirement (12.0 vs 26.0). Aiko's advantage is update cadence (every 6 weeks vs every 7 months) and chart position (#22 vs unranked). On ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Bookfast.io is free to download; Aiko costs $24.00 up front. Neither carries in-app purchases, so what you see is what you pay.
Bookfast.io ships an update every 7 months, Aiko every 6 weeks. The most recent releases landed on September 17, 2026 and September 23, 2026 respectively.
| Parameter | Bookfast.io | Aiko |
|---|---|---|
| Price | Free — better | $24.00 |
| Rating | — | 4.7 (325 ratings) — better |
| Positive reviews | — | 86.7% of reviews |
| Number of ratings | — | 325 — better |
| Update frequency | Every 7 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Best chart rank | — | #22 — better |
| Devices | iPhone, iPod | iPhone, iPad, Mac, Vision Pro — better |
| Requires iOS | 12.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 29 MB | 1.7 GB |
| Age rating | 4+ | 4+ |
| Developer | Codaplant Limited | Sindre Sorhus |
Bugs and requests
Bookfast.io
Not enough reviews yet to summarise bugs or requests.
Aiko
Reported bugs
3 issues- Repeated sentences
- Incorrect language detection
- Transcription loss on app exit
Requested features
4 requests- Support for multiple speakers
- Ability to select transcription model
- Export options for timestamps and speaker labels
- Background transcription mode
In-app purchases
Bookfast.io
No in-app purchases
Aiko
No in-app purchases









