Comparison

謎解き㊙母の手紙2 vs 鍵屋

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

Head to head
About

謎解き㊙母の手紙2

Unravel the mysteries left behind in a series of challenging letters. Solve puzzles and decipher clues to progress through this engaging game. Perfect for a quick mental break or to share on social media.

Highlights
  • Solve letter puzzles
  • Decipher challenging clues
  • Progress through stages
  • Use letter panels to answer
  • Suitable for breaks and commutes
Features
Read full description

大好評につき続編リリース! >> 母の残した【謎】の置き手紙 2<< うちの母は癖がすごい。これは【手紙】という名の【挑戦状】。 貴方は母の置き手紙の謎を全て解読できるだろうか!? ▼遊び方  1:母の手紙(問題)を見る  2:答えを考える  3:画面下の文字パネルをタップして解答する 4:正解すると次の問題に進みます ▼おすすめ利用シーン ・暇で仕方ないときに!! ・勉強の息抜きに!! ・通勤通学の時間に!! ・Twitterのつぶやきネタに!! ・動画実況に!!

About

鍵屋

Read full description

開けられないものを、開く場所「鍵屋」に訪れる人々のショートストーリー集。 【あそび方】 ・作業台をタップすると箱を拡大します。 ・拡大した箱の気になるところをタップしましょう。 ・お客さんのフキダシをタップすると、お話を聞くことができます。 ・ヒントやアイテムを得られることがあるので、積極的に話しかけましょう。 ・アイテムを拡大欄までスワイプすると、アイテムを拡大できます。 ・アイテムを使用したいところまでスワイプすると、使用できます。 ・拡大したアイテムに、別のアイテムを使用できることもあります。 ・画面左下のヒントボタンから「ヒント」「答え」をみることができます。

Screenshots

謎解き㊙母の手紙24 screens
鍵屋4 screens

Verdict

The call

The clearest difference is rating: 鍵屋 at 4.8 against 謎解き㊙母の手紙2's 2.3. 鍵屋 also leads on ratings volume (16 vs 3). 謎解き㊙母の手紙2's advantage is ads (none vs shown) and review sentiment (64% vs 35%). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

鍵屋 holds the better App Store score, 4.8 against 2.3. That said, the two scores are not equally well evidenced: 鍵屋 has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 64% of 謎解き㊙母の手紙2's written reviews are positive against 35% of 鍵屋's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

謎解き㊙母の手紙2 ships an update every 2 weeks, 鍵屋 every 2 months. Both last shipped on October 24, 2026.

Scorecard6 real differences · 4 level
謎解き㊙母の手紙2 versus 鍵屋: the parameters behind the verdict, then further details
Parameter謎解き㊙母の手紙2鍵屋
PriceFreeFree
Rating2.3 (3 ratings)4.8 (16 ratings) — better
Positive reviews64.0% of reviews — better34.8% of reviews
Number of ratings316 — better
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS9.0 — better14.0
Further details — not scored
Size185 MB127 MB
Age rating4+9+
DeveloperMIKU KURAKIGlobalGear Co. Ltd.

Customer experience

謎解き㊙母の手紙2

All ratings3 ratings
Positive0.0%
Neutral66.7%
Negative33.3%
Written reviews50 reviews
Positive64.0%
Neutral8.0%
Negative28.0%

鍵屋

All ratings16 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews23 reviews
Positive34.8%
Neutral17.4%
Negative47.8%

In-app purchases

None

謎解き㊙母の手紙2

No in-app purchases

None

鍵屋

No in-app purchases

Questions

Is 謎解き㊙母の手紙2 free?
謎解き㊙母の手紙2 is free to download, with no in-app purchases.
Is 鍵屋 free?
鍵屋 is free to download, with no in-app purchases.
Which has better reviews, 謎解き㊙母の手紙2 or 鍵屋?
鍵屋 is rated higher. 謎解き㊙母の手紙2 averages 2.3 out of 5 from 3 ratings, while 鍵屋 averages 4.8 from 16 ratings.
Do 謎解き㊙母の手紙2 or 鍵屋 have ads?
鍵屋 shows ads; 謎解き㊙母の手紙2 does not.
Which is updated more often, 謎解き㊙母の手紙2 or 鍵屋?
謎解き㊙母の手紙2 ships an update every 2 weeks, and 鍵屋 every 2 months. Most recently, 謎解き㊙母の手紙2 was updated on October 24, 2026 and 鍵屋 on October 24, 2026.

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