TwoScales vs SunSpan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TwoScales
This app offers a dual-scale weather board for tracking global cities and a fun, fast-paced game to test your forecasting skills. View conditions in Celsius or Fahrenheit, save favorites, and compete for high scores.
- Dual-scale temperature display (C/F)
- Global city weather tracking
- Favorite location management
- Live weather guessing game
- Score and streak tracking
- Light/Dark/System appearance modes
Read full descriptionHide full description
TwoScales combines a practical weather board with a fast live-weather challenge game. Track cities around the world and view current conditions in both Celsius and Fahrenheit. Search for locations quickly, save your favorites, and keep an organized board of the places you care about most. Each city includes local time, weather conditions, and additional details to help you check the forecast at a glance. When you want something more interactive, jump into Forecast Challenge and test yourself with live-weather questions. Build your score, improve your streak, and turn everyday weather checking into a quick game. Features: • View temperatures in both Celsius and Fahrenheit • Search for cities with fast suggestions • Save and manage your favorite locations • See local time and detailed weather information • Refresh conditions anytime from your weather board • Play a live-weather guessing game with score and streak tracking • Unlock support for more saved cities with a one-time purchase • Choose your preferred appearance with Light, Dark, or System mode Whether you want a clean weather tracker, a dual-scale reference, or a small challenge built around real conditions, TwoScales gives you both utility and play in one app.
SunSpan
Visualize an entire year of daylight, sunrise, sunset, and twilight on a single, intuitive chart. Easily inspect daily solar times and phases by tapping or dragging across the visual representation. Offers detailed insights into seasonal changes and astronomical events.
- Full-year daylight chart
- Eight-stop twilight gradient
- Inspect daily solar times
- DST transitions marked
- Location picker via map/GPS
- Automatic time zone resolution
Read full descriptionHide full description
SunSpan — A Year of Daylight on One Screen SunSpan renders an entire year of sunrise, sunset, and twilight as a single chart. Each day is a vertical band shaded from astronomical night through nautical and civil twilight into full daylight, so the seasonal curve, the solstices, the equinoxes, and effects like white nights and polar day are visible at a glance. Tap or drag across the chart to select any day and see its sunrise, sunset, daylight length, and twilight phase times in a detail bubble. Features - Full-year daylight chart for any location, any year from 1900 to 2100 - Eight-stop twilight gradient: night, astronomical, nautical, civil, day - Tap or drag any day to inspect sunrise, sunset, daylight length, and twilight phase times - DST transitions marked on the chart - Location picker via satellite map, or automatic from device GPS - Time zone resolved automatically from the selected coordinates - Localized in English, Spanish, German, and Ukrainian Privacy No accounts, no analytics, no ads. Location is used only on-device to compute solar geometry and never leaves the device.
Screenshots
Verdict
The clearest difference is in-app purchases: SunSpan at none against TwoScales's 1. SunSpan also leads on iOS requirement (16.0 vs 18.2). On price, rating, ratings volume and update cadence 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. TwoScales sells 1 one-off in-app purchase. SunSpan asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for TwoScales against 5.0 for SunSpan. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
TwoScales ships an update every 3 days, SunSpan every 2 days. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.
| Parameter | TwoScales | SunSpan |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.2 | 16.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Cherry Pi Solutions LLC | Mykhailo Chelnokov |
In-app purchases
TwoScales
- Unlock More Cities$1.99
SunSpan
No in-app purchases









