# tio vs Parallel

The clearest difference is in-app purchases: tio at none against Parallel's 4. tio also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Parallel sells 4 one-off in-app purchases. tio asks for nothing beyond the download.

tio ships an update every 2 weeks, Parallel every 3 weeks. The most recent releases landed on September 16, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | tio | Parallel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/parallel-history-timeline/id6772115245/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 86 MB | 5 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [tio health UG (haftungsbeschränkt)](https://appshunter.io/developer/1827457767) | [Anatol Knotek](https://appshunter.io/developer/1895362751) |

## What reviewers say

### tio

[App page](https://appshunter.io/ios/app/tio-parent-compass/id6748820249)

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

**In-app purchases:** none


### Parallel

[App page](https://appshunter.io/ios/app/parallel-history-timeline/id6772115245)

Explore historical connections by viewing multiple timelines simultaneously. Discover who lived at the same time as historical figures and events. Create custom collections or use curated ones to delve into specific eras and topics.

**Highlights:** View multiple historical timelines, Discover contemporaries at a glance, Access concise biographies with Wikipedia links, Create custom history collections, Offline functionality, Private and no tracking

**Features:** Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Painters & Sculptors XL | $1.99 | one-time |
| Buildings XL | $1.99 | one-time |
| Science & Technology XL | $1.99 | one-time |
| Parallel Pro | $3.99 | one-time |


## Frequently asked questions

### Is tio free?

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

### Is Parallel free?

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

### Do tio or Parallel have ads?

Neither tio nor Parallel shows ads.

### Which is updated more often, tio or Parallel?

tio ships an update every 2 weeks, and Parallel every 3 weeks. Most recently, tio was updated on September 16, 2026 and Parallel on September 25, 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.*