Span vs Tower Builder
Price, ratings, monetisation and update history for both games, side by side โ with what reviewers say about each.
Span
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Span is a calm, physics-driven bridge builder. Draw a bridge across the gap, choose your materials, then press Test and watch it carry the load โ or buckle in glorious slow motion. Every beam glows with the forces running through it: a live X-ray of tension and compression, so you can see exactly why it held, or why it snapped. Rewind, move one strut, try again. โข 57 hand-built levels across eight worlds โ timber valleys to ocean straits โข Timber, steel, stone, cables and road & rail decks โข Real hazards: wind, earthquakes, thermal stress and floods โข Drawbridges, canal locks, trains and passing ships โข God-mode Sandbox: unlimited budget, every material, every disaster โข Level editor: sculpt terrain, place anchors, schedule the traffic โข One-tap replay export โ share your best holds and worst fails No ads. No timers. No subscription. Buy once, build forever. Free through Chapter 1 โ unlock the full game (all worlds, the sandbox and the editor) with a single purchase. Road vehicle models by Daniel Zhabotinsky (CC BY 4.0). Full credits in-app.
Tower Builder
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Tower Builder: Earthquake Simulator is a physics-based simulation game where you design, construct, and test structural stability against various earthquake intensities. Build high-rise structures, optimize beam/column load distributions, and analyze real-time structural performance under seismic forces.
Screenshots
Verdict
The clearest difference is ads: Span at none against Tower Builder's shown. Tower Builder's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Span sells 1 one-off in-app purchase and Tower Builder sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Span ships an update every 5 days, Tower Builder every 4 days. The most recent releases landed on October 4, 2026 and October 5, 2026 respectively.
| Parameter | Span | Tower Builder |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days | Every 4 days โ better |
| Ads | No โ better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.0 โ better |
| Further details โ not scored | ||
| Size | 60 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | Dodecki Labs | AXIAL MUHENDISLIK VE YAZILIM LIMITED SIRKETI |
In-app purchases
Span
- Span Complete$7.99
Tower Builder
- Remove Ads$2.99









