RADD vs Build Up!!
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
RADD
Test your reflexes and improve your math skills with this fast-paced addition game. Swipe numbers to merge and add them quickly to increase your score before the timer runs out. Compete with friends and enjoy colorful, addictive gameplay.
- Swipe to merge numbers
- Add numbers for score
- Timed gameplay
- Power-ups for boosts
- Compete with friends' scores
- Improve addition skills
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RADD is a speed math game of adding numbers. Compete with your friend’s scores, test your reflexes, and improve your math skills in this fun and colorful brain game! How to play: - Swipe numbers together to merge them - Merged numbers are added together - Adding numbers quickly increases your score - Tap on power-ups for a boost - Be quick - the timer will run out on you! RADD (Radius + Add) will improve your addition skills or just pass the time with it’s addicting gameplay!
Build Up!!
Construct your tower as tall as possible by strategically placing building nodes. Collect more nodes as you ascend to reach crucial checkpoints and achieve new heights.
- Build structures high
- Gather building nodes
- Reach checkpoints
- Ascend to new heights
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Build your structure as high as you can! Gather additional building nodes along the way and reach the checkpoints!
Screenshots
Verdict
The clearest difference is review sentiment: RADD at 76% against Build Up!!'s 34%. RADD also leads on ads (none vs shown) and rating (4.8 vs 4.5). Build Up!!'s advantage is ratings volume (16K vs 29). On price, update cadence, in-app purchases and monetization model 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. RADD sells 1 one-off in-app purchase and Build Up!! sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
RADD holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Build Up!! has 16K ratings behind it against 29, so its average is the more settled of the two. Written reviews point the same way: 76% of RADD's written reviews are positive against 34% of Build Up!!'s.
Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | RADD | Build Up!! |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (29 ratings) — better | 4.5 (16K ratings) |
| Positive reviews | 76.5% of reviews — better | 34.1% of reviews |
| Number of ratings | 29 | 16K — better |
| Update frequency | Fortnightly | Fortnightly |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 12 MB | 266 MB |
| Age rating | 4+ | 12+ |
| Developer | Toast - Apps and Software LLC | Voodoo |
Customer experience
RADD
Build Up!!
Bugs and requests
RADD
Not enough reviews yet to summarise bugs or requests.
Build Up!!
Reported bugs
3 issues- Rivet counter malfunction
- Levels regenerating incorrectly
- Tower physics issues
Requested features
3 requests- More level variety
- Ability to create custom maps
- Removal of perfect triangle requirement
In-app purchases
RADD
- Extra Points$0.99
Build Up!!
- Remove Ads.$2.99
