# Onymera vs Study Bud AI

The clearest difference is device support: Study Bud AI at 3 against Onymera's 1. Study Bud AI also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Onymera sells 1 one-off in-app purchase and Study Bud AI sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Onymera ships an update every 2 days, Study Bud AI daily. Both last shipped on October 29, 2026.

## The numbers

| Metric | Onymera | Study Bud AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/onymera/id6807512623/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 31 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Convoya](https://appshunter.io/developer/1875408166) | [Khalid Alenazi](https://appshunter.io/developer/6805030158) |

## What reviewers say

### Onymera

[App page](https://appshunter.io/ios/app/onymera/id6807512623)

Learn new words daily with this app that displays a different word on your lock screen every minute. It offers extensive vocabulary lists in nine languages, complete with definitions, example sentences, and pronunciation guides. The app works offline and allows for personalized word selection based on your needs.

**Highlights:** Daily word display on lock screen, Extensive vocabulary in 9 languages, Definitions, example sentences, and pronunciation, Offline functionality, Customizable word selection, Word history and saved words

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Onymera Full Unlock | $2.99 | one-time |


### Study Bud AI

[App page](https://appshunter.io/ios/app/study-bud-ai/id6808664777)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Credits | $1.99 | one-time |
| 500 Credits | $14.99 | one-time |
| 1,500 Credits | $34.99 | one-time |
| 5,000 Credits | $79.99 | one-time |


## Frequently asked questions

### Is Onymera free?

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

### Is Study Bud AI free?

Study Bud AI is free to download, with in-app purchases available.

### Do Onymera or Study Bud AI have ads?

Neither Onymera nor Study Bud AI shows ads.

### Which is updated more often, Onymera or Study Bud AI?

Onymera ships an update every 2 days, and Study Bud AI daily. Most recently, Onymera was updated on October 29, 2026 and Study Bud AI on October 29, 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.*