# GeekMath vs 念念不忘 · 纪念日AI贺卡

The clearest difference is update cadence: GeekMath at weekly against 念念不忘 · 纪念日AI贺卡's every 2 weeks. GeekMath also leads on device support (4 vs 1) and iOS requirement (14.0 vs 17.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. GeekMath sells 1 one-off in-app purchase and 念念不忘 · 纪念日AI贺卡 sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

GeekMath ships an update weekly, 念念不忘 · 纪念日AI贺卡 every 2 weeks. Both last shipped on October 9, 2026.

## The numbers

| Metric | GeekMath | 念念不忘 · 纪念日AI贺卡 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Freemium | — |
| Size | 6 MB | 40 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jian Chen](https://appshunter.io/developer/1439030851) | [三淼 李](https://appshunter.io/developer/1812594990) |

## What reviewers say

### GeekMath

[App page](https://appshunter.io/ios/app/geekmath/id6471944745)

This app offers a powerful and flexible calculator experience with advanced features like cross-row calculations, element linking, and real-time results. It supports multiple languages and syncs across devices, enhancing calculation efficiency for all users.

**Highlights:** Cross-row linked calculations, Element linking, Object annotation, iCloud synchronization, Multi-language support, Customizable workspace, Real-time preview

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GeekMath的VIP会员年卡 | $1.99 | one-time |


### 念念不忘 · 纪念日AI贺卡

[App page](https://appshunter.io/ios/app/ai/id6759729129)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus 会员 · 月付 | $1.99 | per month |
| Plus 会员 · 年付 | $14.99 | per year |


## Frequently asked questions

### Is GeekMath free?

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

### Is 念念不忘 · 纪念日AI贺卡 free?

念念不忘 · 纪念日AI贺卡 is free to download, with in-app purchases available.

### Do GeekMath or 念念不忘 · 纪念日AI贺卡 have ads?

Neither GeekMath nor 念念不忘 · 纪念日AI贺卡 shows ads.

### Which is updated more often, GeekMath or 念念不忘 · 纪念日AI贺卡?

GeekMath ships an update weekly, and 念念不忘 · 纪念日AI贺卡 every 2 weeks. Most recently, GeekMath was updated on October 9, 2026 and 念念不忘 · 纪念日AI贺卡 on October 9, 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.*