Jake for stratigraphy vs RockSpin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Jake for stratigraphy
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Jake makes measuring a stratigraphic section a snap. Place the device on a bed, and with a tap of a button, record your dip and dip direction. Arrows tell you when your device is pointed in the direction of dip and inclined at the correct dip angle. No more futzing with hard-to-read clinometers and compasses!
RockSpin
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RockSpin brings the polarizing microscope to your fingertips. Designed for geology students, researchers, and educators, this app lets you explore petrographic thin sections with full 360-degree rotation. Compare PPL and XPL views, inspect mineral markers, explore 3D crystal structures, browse a curated rock image catalog, and save favorites across your account. Every thin section is available at 300px at no charge. Pro ($4.99/month or $49.99/year) unlocks 500px and 700px viewing. Subscriptions auto-renew and can be cancelled in Apple ID settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://rockspin.app/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Jake for stratigraphy at none against RockSpin's 3. RockSpin's advantage is update cadence (every 2 days vs every 22 months) and iOS requirement (16.0 vs 26.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. RockSpin sells 3 in-app purchases, starting at $9.99 per month. Jake for stratigraphy asks for nothing beyond the download.
Jake for stratigraphy ships an update every 22 months, RockSpin every 2 days. Both last shipped on October 4, 2026.
| Parameter | Jake for stratigraphy | RockSpin |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 22 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 26.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 81 MB |
| Age rating | 4+ | 4+ |
| Developer | Hunt Mountain Software | WOOHYUN JEON |
In-app purchases
Jake for stratigraphy
No in-app purchases
RockSpin
- Pro Monthly$9.991 Month
- Pro Yearly$99.991 Year
- 1,000 Credits$14.99
Questions
Is Jake for stratigraphy free?
Is RockSpin free?
Do Jake for stratigraphy or RockSpin have ads?
Which is updated more often, Jake for stratigraphy or RockSpin?
Other comparisons
