Comparison

Kiri and Lou vs Einstein's Relativity

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Kiri and Lou

Explore a peaceful forest, play hide and seek with charming characters, and collect new creatures and plants. Design your own unique forest environment and capture memories with your favorite characters.

Highlights
  • Play hide and seek
  • Create your own forest
  • Collect new creatures and plants
  • Plant in the real world
  • Snap photos with characters
  • Two-player mode
Read full description

Play hide and seek with Kiri and Lou! Create your own beautiful peaceful forest and discover Kiri, a feisty little dinosaur and her best friend Lou, a gentle creature with a long and remarkably sensitive trunk. Play hide and seek in your forest to find new creatures to play with and collect new plants to create with. FEATURES: - Two ways to play - play on your own or with a friend - Plant your very own paper forest in the real world - Hide a character in your forest - See hints as you seek and get 'Warmer' or 'Cooler' - Collect new creatures and plants for your forest as you play - Create your own special forest - Snap photos with your favourite creatures - Beautiful paper art and 3D creatures ABOUT: Hide and Seek with Kiri and Lou features the magical world and creatures of the Kiri and Lou television series. Kiri and Lou and their friends live in a beautiful prehistoric forest. It’s a playful happy world that celebrates kindness. Made with the support from NZ on Air and the Canadian Media Fund. Created by DOTDOT, Stretchy and Yowza Animation. Honorable Mention for Best App for Kids at the Cynopsis Best of the Best Awards! IGRS Rating: 3+

About

Einstein's Relativity

Features
Read full description

Step into the world of 'Einstein's Relativity' and embark on a stellar journey to decode the intricacies of the most celebrated theory in science. Features: Interactive Einstein: Journey through relativity with Einstein himself, presented as your animated 3D guide. Let his genius illuminate your path! The Twin Paradox Adventure: Join twins Hans and Eduard on a space odyssey that showcases the mesmerizing effects of time dilation. Eduard's voyage to Alpha Centauri and back will astonish you as you witness the age-defying consequences of near-light-speed travel. Gravitational Time Mastery: Command a lift and observe Gravitational Time Dilation. As the lift ascends and descends, witness the clock's rhythm change in sync with gravity's pull. Rocket's Relativistic Ride: Steer a rocket nearing the speed of light. Discover how velocity affects time, but caution! Surpassing light speed creates a singularity! Experience Length Contraction: As you venture near the speed of light, see objects shorten in their direction of motion. It's Einstein's universe, and you're witnessing its wonders! Einstein's Relativity offers more than just games. It's an enlightening experience where the effects of time dilation and length contraction are brought to life. Whether you're a science enthusiast or just starry-eyed about space, this app promises a cosmic education like no other.

Screenshots

Kiri and Lou3 screens
Einstein's Relativity4 screens

Verdict

The call

The clearest difference is in-app purchases: Kiri and Lou at none against Einstein's Relativity's 2. Kiri and Lou also leads on update cadence (every 5 months vs every 24 months). Einstein's Relativity's advantage is iOS requirement (13.0 vs 15.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Einstein's Relativity sells 2 one-off in-app purchases. Kiri and Lou asks for nothing beyond the download.

UpkeepUpdate frequency

Kiri and Lou ships an update every 5 months, Einstein's Relativity every 24 months. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
Kiri and Lou versus Einstein's Relativity: the parameters behind the verdict, then further details
ParameterKiri and LouEinstein's Relativity
PriceFreeFree
Rating4.3 (4 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings4 — better—
Update frequencyEvery 5 months — betterEvery 24 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size215 MB322 MB
Age rating4+4+
DeveloperDot Dot LimitedHuman Heroes Ltd

In-app purchases

None

Kiri and Lou

No in-app purchases

2 purchases

Einstein's Relativity

One-time2
  • The Sensation of Seconds$0.99
  • The Cadence Of Clocks$0.99

Questions

Is Kiri and Lou free?
Kiri and Lou is free to download, with no in-app purchases.
Is Einstein's Relativity free?
Einstein's Relativity is free to download, with in-app purchases available.
Do Kiri and Lou or Einstein's Relativity have ads?
Neither Kiri and Lou nor Einstein's Relativity shows ads.
Which is updated more often, Kiri and Lou or Einstein's Relativity?
Kiri and Lou ships an update every 5 months, and Einstein's Relativity every 24 months. Most recently, Kiri and Lou was updated on October 24, 2026 and Einstein's Relativity on October 30, 2026.

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