Comparison

STEINS;GATE 比翼恋理のだーりん vs ALTDEUS

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

Head to head
About

STEINS;GATE 比翼恋理のだーりん

This is a romantic and comedic visual novel spin-off from the STEINS;GATE series. It follows the daily lives of lab members with a focus on humor and sweet romantic scenes, featuring multiple character routes and full voice acting.

Highlights
  • Romantic and comedic adventure
  • Phone trigger system
  • Six character routes with individual endings
  • Full voice acting
  • Over 20 hours of gameplay
  • Universal app support (iPhone/iPad)
  • iCloud save data synchronization
Features
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Since 2009, the STEINS; GATE series has sold over 1,000,000 copies! Hypothetical Science ADV “STEINS; GATE” is a spin-off game and Hypothetical *Second-grade Syndrome x ADV “STEINS; GATE Hiyoku Renri no Darling” has finally been released for iOS! ※This game is only available in Japanese. ※This game has no plans to support a Korean version. ■ Sales copy This story may be real? This is the story of the Future Gadget Laboratory members. ■Product summary Want to play more Hypothetical Science ADV STEINS; GATE games? Why not try STEINS; GATE’s new slapstick comedy Hypothetical Second-grade Syndrome, which has finally been released! The concept has changed compared to the previous dramatic story, as the game depicts the daily romantic lives of lab members, often with comedic effect! The game is not only a slapstick comedy, but also includes many sweet and romantic scenes! This spin-off game gives users the same thrilling experience and those who played the previous game will be able to take on the new challenge! ■ Features * A romantic and comedic adventure game with the characters from STEINS;GATE! *Phone trigger system optimized for iOS! The story changes depending on your preferences! *Appear as six characters (including one male character) with individual endings for each! *Full voice acting! *The game has more than 20 hours total playing time! * You can enjoy this game on either iPhone or iPad as a Universal app! (The game is not optimized for iPhone5) *Saved data is stored on iCloud! Play with different devices and share the saved data! *Supports Game Center! *Supports Push Notifications! ■How to play Easy intuitive touch screen! ・Basic controls Phone Screen: Invoke phone trigger/Close Using your two fingers (or pinch in): Menu display /Non display Swipe inward from the edge of the screen: Menu display Swipe horizontally to the edge of the screen from inside:Menu Non display Tap: Send text and OK Swipe Down: Log screen display Swipe Up: Hides message area display Swipe Right: Skip read messages Swipe Left: Skip Forced message Tap & Hold (using one finger, press and hold): Auto mode If a black frame is displayed around the screen, swipe inward from near the edge where the background is displayed to display the system menu. ・Controls for iPhone Hold mobile in portrait: Invoke phone trigger Hold mobile in landscape: Close phone trigger ・Controls for iPad Swipe up on the right edge screen: Invoke phone trigger Swipe down the left side of phone trigger: Close phone trigger. ・Saved Data/ Backup to iCloud Choose BACKUP from the SYSTEM on the title screen, and then you can backup the saved data to iCloud. (Setup iCloud: You need to turn on Documents & Data.) ・Restore Saved data from iCloud Choose RESTORE from the SYSTEM on the title screen, and then you can restore the saved data from iCloud (The saved data on the device can be overwritten when you restore.) ■Story Rintato Okabe, commonly known as Okarin is a University student, who is still stuck in *Second-grade Syndrome. He introduces himself as a mad scientist named Kyoma Hououin and he spends most of his time doing odd research with several members of the Future Gadget Laboratory, which is commonly called Lab. They accidentally find an invention, “D-mail,” which can send emails to the past. One day, Okarin finds the lab members busily arranging a celebration party for a newly completed gadget. But, why have they produced a new gadget while Okarin doesn’t know anything about it? The number of lab members has increased from six to eight. It seems that they have changed the past with the D-mail inventions. What’s more, due to the D-mail inventions, the electric bill has gone up immensely. Creating a cash flow problem for the lab. Therefore, in these circumstances the members plan to sell a new gadget to solve this financial difficulty.

About

ALTDEUS

Embark on a sci-fi adventure in a post-apocalyptic world where humanity fights colossal invaders. Pilot a powerful mech, make critical decisions, and uncover a story of revenge and survival.

Highlights
  • Epic sci-fi story
  • Pilot humanoid weapons
  • Critical decision-making
  • Star-studded voice cast
  • Award-winning VR experience
  • Multiple subtitle languages
Features
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The award-winning, critically acclaimed SF adventure VR game is finally available on smartphones! ALTDEUS is the second installment of the Chronos Universe. Character design by LAM, voiced by a star-studded cast, and music by renowned artists such as ASCA, R!N, Wolpis Carter, Setsuko, YuNi, and Konomi Suzuki! ■Story In 2080, the sudden appearance of colossal beings known as "Meteoras" forced humanity to seek refuge in a subterranean city with a radius of only 2 kilometers, A.T. (Augmented Tokyo). Two centuries later, Chloe, a Meteoras opposing organization "Prometheus" member, pilots the humanoid city-defense weapon Makhia, surviving the harsh battles alongside her comrades. Everything she does is to avenge her dear friend, Coco. As numerous crucial decisions loom ever closer, will you be able to pull the trigger? ■ Characters Chloe (VA. Chelsey Moore - English, Akari Kito - Japanese) Coco Coconoe (VA. Danii Meger - English, Kaya Okuno - Japanese) Noa (VA. Grace Chan - English, Yumiri Hanamori - Japanese) Anima (VA. Yui Ishikawa - Japanese) Yamato Amanagi (VA. Jesse Inocalla - English, Yusuke Kobayashi - Japanese) Aoba Iwaza (VA. Adam Fedyk - English, Yoshihiko Aramaki - Japanese) Julie (VA. Asia Mattu - English, Yu Serizawa - Japanese) Deiter (VA. Chris Garnier - English, Show Hayami - Japanese) AARC Ares (VA. Nobuhiko Okamoto - Japanese) ■ Artists ASCA / R!N / Setsuko / YuNi / Wolpis Carter / Konomi Suzuki / Kuniyuki Takahashi (MONACA) / kz / Yosuke Kori ■ Voice Languages: Japanese / English ■ Subtitle Languages: Japanese / English / German / French / Chinese (Traditional / Simplified) *Please note that ALTDEUS: Beyond Chronos 'EXTRA EPISODE' does not support German.

Screenshots

STEINS;GATE 比翼恋理のだーりん4 screens
ALTDEUS4 screens

Verdict

The call

The clearest difference is rating: ALTDEUS at 5.0 against STEINS;GATE 比翼恋理のだーりん's 3.9. ALTDEUS also leads on price ($13.99 vs $14.99) and iOS requirement (12.0 vs 15.0). STEINS;GATE 比翼恋理のだーりん's advantage is ratings volume (7 vs 1). On update cadence, ads, 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

CostPrice · In-app purchases · Ads · Monetization

STEINS;GATE 比翼恋理のだーりん costs $14.99 and ALTDEUS $13.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

ALTDEUS holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: STEINS;GATE 比翼恋理のだーりん has 7 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

STEINS;GATE 比翼恋理のだーりん ships an update every 7 months, ALTDEUS daily. Both last shipped on September 20, 2026.

Scorecard4 real differences · 6 level
STEINS;GATE 比翼恋理のだーりん versus ALTDEUS: the parameters behind the verdict, then further details
ParameterSTEINS;GATE 比翼恋理のだーりんALTDEUS
Price$14.99$13.99 — better
Rating3.9 (7 ratings)5.0 (1 ratings) — better
Positive reviews52.7% of reviews—
Number of ratings7 — better1
Update frequencyEvery 7 monthsDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size1.9 GB1.6 GB
Age rating12+12+
DeveloperMAGES. Inc.Izanagigames, Inc.

Customer experience

STEINS;GATE 比翼恋理のだーりん

All ratings7 ratings
Positive71.4%
Neutral0.0%
Negative28.6%
Written reviews55 reviews
Positive52.7%
Neutral21.8%
Negative25.5%

ALTDEUS

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

STEINS;GATE 比翼恋理のだーりん

No in-app purchases

None

ALTDEUS

No in-app purchases

Questions

Is STEINS;GATE 比翼恋理のだーりん free?
STEINS;GATE 比翼恋理のだーりん costs $14.99, with no in-app purchases.
Is ALTDEUS free?
ALTDEUS costs $13.99, with no in-app purchases.
Which has better reviews, STEINS;GATE 比翼恋理のだーりん or ALTDEUS?
ALTDEUS is rated higher. STEINS;GATE 比翼恋理のだーりん averages 3.9 out of 5 from 7 ratings, while ALTDEUS averages 5.0 from 1 ratings.
Do STEINS;GATE 比翼恋理のだーりん or ALTDEUS have ads?
Neither STEINS;GATE 比翼恋理のだーりん nor ALTDEUS shows ads.
Which is updated more often, STEINS;GATE 比翼恋理のだーりん or ALTDEUS?
STEINS;GATE 比翼恋理のだーりん ships an update every 7 months, and ALTDEUS daily. Most recently, STEINS;GATE 比翼恋理のだーりん was updated on September 20, 2026 and ALTDEUS on September 20, 2026.

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