# SleepSign vs 心想計

SleepSign and 心想計 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SleepSign ships an update monthly, 心想計 fortnightly. The most recent releases landed on September 17, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | SleepSign | 心想計 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Size | 32 MB | 14 MB |
| Requires iOS | **15.5** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Kissei Comtec Co., Ltd.](https://appshunter.io/developer/503794772) | [Treebell](https://appshunter.io/developer/1599520683) |

## What reviewers say

### SleepSign

[App page](https://appshunter.io/ios/app/sleepsign-cloud/id1661601576)

**In-app purchases:** none


### 心想計

[App page](https://appshunter.io/ios/app/id6468419918)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SleepSign free?

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

### Is 心想計 free?

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

### Do SleepSign or 心想計 have ads?

Neither SleepSign nor 心想計 shows ads.

### Which is updated more often, SleepSign or 心想計?

SleepSign ships an update monthly, and 心想計 fortnightly. Most recently, SleepSign was updated on September 17, 2026 and 心想計 on September 11, 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.*