# Timecon vs Keisan Memo

The clearest difference is update cadence: Keisan Memo at weekly against Timecon's every 9 months. Timecon's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Timecon sells 2 in-app purchases, starting at $4.99 per month and Keisan Memo sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Timecon ships an update every 9 months, Keisan Memo weekly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Timecon | Keisan Memo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 9 months | **Weekly** |
| Size | 29 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [kota tada](https://appshunter.io/developer/1658942612) | [丽佳 施](https://appshunter.io/developer/1894580777) |

## What reviewers say

### Timecon

[App page](https://appshunter.io/ios/app/timecon-time-conversion-tool/id6743643430)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-free for 1 month | $4.99 | per month |
| Ad-free for 1 year | $49.99 | per year |


### Keisan Memo

[App page](https://appshunter.io/ios/app/keisan-memo-calc-notepad/id6791201696)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads (Lifetime) | $0.99 | one-time |


## Frequently asked questions

### Is Timecon free?

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

### Is Keisan Memo free?

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

### Do Timecon or Keisan Memo have ads?

Both Timecon and Keisan Memo show ads.

### Which is updated more often, Timecon or Keisan Memo?

Timecon ships an update every 9 months, and Keisan Memo weekly. Most recently, Timecon was updated on October 28, 2026 and Keisan Memo on October 24, 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.*