# CELT vs TheTeacherAi

The clearest difference is in-app purchases: TheTeacherAi at none against CELT's 10. TheTeacherAi also leads on update cadence (monthly vs every 6 months) and iOS requirement (12.0 vs 15.5). On price, ads and device support there is nothing between them.

Both are free to download. CELT sells 10 one-off in-app purchases. TheTeacherAi asks for nothing beyond the download.

CELT ships an update every 6 months, TheTeacherAi monthly. The most recent releases landed on October 5, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | CELT | TheTeacherAi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Size | 146 MB | 104 MB |
| Requires iOS | 15.5 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Online Learning](https://appshunter.io/developer/1790866777) | [Fabdata](https://appshunter.io/developer/1646962913) |

## What reviewers say

### CELT

[App page](https://appshunter.io/ios/app/celt/id6448754205)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Package - 5.69 | $5.69 | one-time |
| Package - 5.89 | $5.89 | one-time |
| Package - 5.9 | $5.90 | one-time |
| Package - 6.19 | $6.19 | one-time |
| Package - 6.29 | $6.29 | one-time |
| Package - 6.39 | $6.39 | one-time |
| Package - 6.49 | $6.49 | one-time |
| Package - 6.59 | $6.59 | one-time |
| Package - 6.69 | $6.69 | one-time |
| Package - 6.79 | $6.79 | one-time |


### TheTeacherAi

[App page](https://appshunter.io/ios/app/theteacherai/id6450213469)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CELT free?

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

### Is TheTeacherAi free?

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

### Do CELT or TheTeacherAi have ads?

Neither CELT nor TheTeacherAi shows ads.

### Which is updated more often, CELT or TheTeacherAi?

CELT ships an update every 6 months, and TheTeacherAi monthly. Most recently, CELT was updated on October 5, 2026 and TheTeacherAi on September 27, 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.*