# Tag Reminder vs CalcNotes

The clearest difference is in-app purchases: Tag Reminder at none against CalcNotes's 2. CalcNotes's advantage is iOS requirement (15.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. CalcNotes sells 2 in-app purchases, starting at $1.99 per month. Tag Reminder asks for nothing beyond the download.

Tag Reminder ships an update every 5 days, CalcNotes weekly. The most recent releases landed on June 1, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Tag Reminder | CalcNotes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tag-reminder/id6499073567/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | Free | — |
| Size | 41 MB | 51 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [daisei tanaka](https://appshunter.io/developer/1602685286) | [naoki otsu](https://appshunter.io/developer/1082476153) |

## What reviewers say

### Tag Reminder

[App page](https://appshunter.io/ios/app/tag-reminder/id6499073567)

Organize tasks with flexible tags instead of folders. Add rich details like subtasks, notes, and attachments. Schedule smart reminders, set recurring tasks, and collaborate with shared tags. Features AI task breakdown and iCloud sync.

**Highlights:** Flexible tag organization, Rich task details with attachments, Recurring tasks, Location-based reminders, Shared tags for collaboration, AI task breakdown

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

**In-app purchases:** none


### CalcNotes

[App page](https://appshunter.io/ios/app/calcnotes-calculation-memo/id6752585573)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | per month |
| Premium (Pay Once) | $4.99 | one-time |


## Frequently asked questions

### Is Tag Reminder free?

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

### Is CalcNotes free?

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

### Do Tag Reminder or CalcNotes have ads?

Neither Tag Reminder nor CalcNotes shows ads.

### Which is updated more often, Tag Reminder or CalcNotes?

Tag Reminder ships an update every 5 days, and CalcNotes weekly. Most recently, Tag Reminder was updated on June 1, 2026 and CalcNotes on September 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*