# TimeTree HD vs BidNote

The clearest difference is rating: BidNote at 4.8 against TimeTree HD's 1.0. BidNote also leads on review sentiment (100% vs 63%) and update cadence (weekly vs every 23 months). TimeTree HD's advantage is in-app purchases (none vs 10) and iOS requirement (8.0 vs 14.5). On price and ads there is nothing between them.

Both are free to download. BidNote sells 10 one-off in-app purchases. TimeTree HD asks for nothing beyond the download.

BidNote holds the better App Store score, 4.8 against 1.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews point the same way: 63% of TimeTree HD's written reviews are positive against 100% of BidNote's.

TimeTree HD ships an update every 23 months, BidNote weekly. The most recent releases landed on October 7, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | TimeTree HD | BidNote |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/timetree-hd/id468820058/reviews) | **[4.8 (4 ratings)](https://appshunter.io/ios/app/bidnote-learn-create-earn/id1669999803/reviews)** |
| Number of ratings | 1 | **4** |
| Positive reviews | 62.5% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 23 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 66 MB | 17 MB |
| Requires iOS | **8.0** | 14.5 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Arizona and Penn State Universities](https://appshunter.io/developer/372842503) | [Gavin Wolfe](https://appshunter.io/developer/1289105620) |

## What reviewers say

### TimeTree HD

[App page](https://appshunter.io/ios/app/timetree-hd/id468820058)

Explore the evolutionary timescale of life with this app. It provides a public knowledge base of divergence times among thousands of organisms, drawing from scientific literature. Easily search for comparisons between species and view summary statistics.

**Highlights:** Explore evolutionary timescale, Thousands of divergence times, Tree-based hierarchical system, Search for organism comparisons, Compute summary statistics, Data from 2,274 studies

**Features:** macOS Compatibility

**In-app purchases:** none


### BidNote

[App page](https://appshunter.io/ios/app/bidnote-learn-create-earn/id1669999803)

This platform offers educational materials and tutoring services tailored to specific college courses. Educators can create and sell content or offer tutoring, earning commissions through PayPal Payouts. It aims to provide a more effective and curated learning experience.

**Highlights:** Course-specific educational materials, Handwritten and typed content, Video lessons, Asynchronous tutoring, Document scanning, PayPal/Venmo commission payouts, Content review for fraud prevention

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tier 2 Tutoring or Material | $1.99 | one-time |
| Tier 3 Tutoring or Material | $2.99 | one-time |
| Tier 4 Tutoring or Material | $3.99 | one-time |
| Tier 5 Tutoring or Material | $4.99 | one-time |
| Tier 6 Tutoring or Material | $5.99 | one-time |
| Tier 8 Tutoring or Material | $7.99 | one-time |
| Tier 10 Tutoring or Material | $9.99 | one-time |
| Tier 13 Tutoring or Material | $12.99 | one-time |
| Tier 15 Tutoring or Material | $14.99 | one-time |
| Tier 20 Tutoring or Material | $19.99 | one-time |


## Frequently asked questions

### Is TimeTree HD free?

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

### Is BidNote free?

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

### Which has better reviews, TimeTree HD or BidNote?

BidNote is rated higher. TimeTree HD averages 1.0 out of 5 from 1 ratings, while BidNote averages 4.8 from 4 ratings.

### Do TimeTree HD or BidNote have ads?

Neither TimeTree HD nor BidNote shows ads.

### Which is updated more often, TimeTree HD or BidNote?

TimeTree HD ships an update every 23 months, and BidNote weekly. Most recently, TimeTree HD was updated on October 7, 2026 and BidNote on September 28, 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.*