# Instant Note vs Sleep Calculator Plus

The clearest difference is in-app purchases: Sleep Calculator Plus at none against Instant Note's 1. Sleep Calculator Plus also leads on update cadence (daily vs every 3 days). Instant Note's advantage is iOS requirement (14.0 vs 16.6). On price, ads and device support there is nothing between them.

Both are free to download. Instant Note sells 1 in-app purchase, starting at $99.99 per year. Sleep Calculator Plus asks for nothing beyond the download.

Instant Note ships an update every 3 days, Sleep Calculator Plus daily. The most recent releases landed on October 15, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Instant Note | Sleep Calculator Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (32 ratings)](https://appshunter.io/ios/app/sleep-calculator-plus/id6741904327/reviews)** |
| Number of ratings | — | **32** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | **Daily** |
| Monetization | — | Free |
| Size | 130 MB | 1 MB |
| Requires iOS | **14.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thinh Pham](https://appshunter.io/developer/1436049529) | [Kevin Hausen](https://appshunter.io/developer/1794777127) |

## What reviewers say

### Instant Note

[App page](https://appshunter.io/ios/app/instant-note-ai-note-taker/id6740257225)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Unlimited | $99.99 | per year |


### Sleep Calculator Plus

[App page](https://appshunter.io/ios/app/sleep-calculator-plus/id6741904327)

This utility helps you determine the ideal times to sleep or wake up by calculating based on natural 90-minute sleep cycles. It aims to help users feel more refreshed and energized by waking them between these cycles.

**Highlights:** Calculate optimal bedtime, Find best wake-up times, Supports 12/24 hour formats, Intuitive interface, Dark design for nighttime, No ads or in-app purchases

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

**In-app purchases:** none


## Frequently asked questions

### Is Instant Note free?

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

### Is Sleep Calculator Plus free?

Sleep Calculator Plus is free to download, with no in-app purchases.

### Do Instant Note or Sleep Calculator Plus have ads?

Neither Instant Note nor Sleep Calculator Plus shows ads.

### Which is updated more often, Instant Note or Sleep Calculator Plus?

Instant Note ships an update every 3 days, and Sleep Calculator Plus daily. Most recently, Instant Note was updated on October 15, 2026 and Sleep Calculator Plus on October 21, 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.*