# ChartTreker vs GEM

The clearest difference is rating: GEM at 5.0 against ChartTreker's 4.5. GEM also leads on update cadence (weekly vs every 6 weeks) and iOS requirement (13.0 vs 18.0). ChartTreker's advantage is ads (none vs shown) and ratings volume (27 vs 1). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. ChartTreker sells 2 in-app purchases, starting at $3.99 per month and GEM sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

GEM holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: ChartTreker has 27 ratings behind it against 1, so its average is the more settled of the two.

ChartTreker ships an update every 6 weeks, GEM weekly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ChartTreker | GEM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (27 ratings)](https://appshunter.io/ios/app/charttreker/id620170298/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gem-dual-momentum-tracker/id6762083449/reviews)** |
| Number of ratings | **27** | 1 |
| Positive reviews | 71.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 104 MB | 58 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Liquidstreams, LLC](https://appshunter.io/developer/620170301) | [Airemes](https://appshunter.io/developer/1710129515) |

## What reviewers say

### ChartTreker

[App page](https://appshunter.io/ios/app/charttreker/id620170298)

This app provides professional-grade mobile charting and technical analysis tools for active traders. It offers real-time market data, advanced indicators, and customizable charts without ads or distractions.

**Highlights:** Intuitive multi-touch charting, Real-time market quotes, Advanced technical indicators, Customizable chart themes, Unlimited watchlists (subscription), Distraction-free interface

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Subscription | $3.99 | per month |
| Standard Subscription | $19.99 | per 6 months |

**What reviewers like**

- 👍 Intuitive and easy to use
- 📈 Great for managing portfolios
- 💡 Accurate trendline transfers
- ✨ Customizable features
- ✅ Good for picking buying/selling points

**What reviewers complain about**

- 🐌 Very slow price updates
- ⏳ Prices not changing for hours
- 💥 Crashes frequently
- 🗑️ Lost watchlists after crash
- 📉 No longer has intra-day charts

**Reported bugs**

- Prices not updating
- App crashes
- Watchlists disappear after crash
- Real-time quotes not working
- Fibonacci retracement calculation error

**Requested features**

- Logarithmic price scale option
- Crosshairs/cursor for individual bars
- Real-time quotes for non-US stocks
- Equity and commodity futures and forex charts
- Sync charts across devices


### GEM

[App page](https://appshunter.io/ios/app/gem-dual-momentum-tracker/id6762083449)

This app provides a data-driven monthly signal for investment decisions based on a dual-momentum strategy. It helps users choose between US stocks, international stocks, and safe assets like Treasury bills, offering backtesting and performance tracking.

**Highlights:** Monthly investment signal, Dual-momentum strategy implementation, Backtesting and performance tracking, Customizable ETF selection, Smart notifications, Pro subscription for advanced features

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $0.99 | per 7 days |
| 3-Month Plan | $10.99 | per 3 months |
| Yearly Plan | $39.99 | per year |


## Frequently asked questions

### Is ChartTreker free?

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

### Is GEM free?

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

### Which has better reviews, ChartTreker or GEM?

GEM is rated higher. ChartTreker averages 4.5 out of 5 from 27 ratings, while GEM averages 5.0 from 1 ratings.

### Do ChartTreker or GEM have ads?

GEM shows ads; ChartTreker does not.

### Which is updated more often, ChartTreker or GEM?

ChartTreker ships an update every 6 weeks, and GEM weekly. Most recently, ChartTreker was updated on November 1, 2026 and GEM on October 31, 2026.

---

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