Project SPECTRA! vs Spell & Learn
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Project SPECTRA!
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Learn about the Solar System using real data! The Project SPECTRA! app is a set of interactive lessons to help students learn science topics, particularly how light is used to explore the Solar System. It is meant to be an in-classroom activity, accompanying lessons found here: https://lasp.colorado.edu/home/education/k-12/project-spectra/ The app features interactive activities for 11 different lessons. Some of the activities serve as alternatives to purchasing scientific equipment to use in the classroom. For an accessible version of the app, see the above link.
Spell & Learn
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Spell & Learn is an engaging and challenging word game designed to enhance players' spelling skills and expand their vocabulary. This interactive language game offers an enjoyable way to learn and practice English while having fun.
Screenshots
Verdict
The clearest difference is update cadence: Spell & Learn at every 4 days against Project SPECTRA!'s every 33 months. Project SPECTRA!'s advantage is iOS requirement (12.0 vs 16.6). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Project SPECTRA! ships an update every 33 months, Spell & Learn every 4 days. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.
| Parameter | Project SPECTRA! | Spell & Learn |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 33 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 12.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 13 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | University of Colorado Boulder | jianfeng xuan |
In-app purchases
Project SPECTRA!
No in-app purchases
Spell & Learn
No in-app purchases
Questions
Is Project SPECTRA! free?
Is Spell & Learn free?
Do Project SPECTRA! or Spell & Learn have ads?
Which is updated more often, Project SPECTRA! or Spell & Learn?
Other comparisons
