Comparison

Planetarium VR vs せみサウンド

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

Head to head
About

Planetarium VR

Explore the night sky with this virtual planetarium. Using your device's GPS and sensors, you can identify constellations and over 3000 stars. It supports VR Cardboard for an immersive experience and offers options for viewing the sky in different scenarios.

Highlights
  • View over 3000 stars
  • Identify 88 constellations
  • Uses GPS and advanced sensors
  • Cardboard VR support
  • Simulates diurnal motion
  • Adjustable viewing locations
Read full description

have a view of Starry sky over a device "Planetarium VR" is using gps and advanced sensor. Only holding the device in the sky, you can see the constellations. "Planetarium VR" is "Cardboard" supported. "Planetarium VR" is equipped with a variety of options. -view the starry sky in the waterside. -Best in a dark place. ■function -stellar to be displayed more than 3000. -using gps and advanced sensor. -Display all of the stars and constellations, apply regardless of the Northern Hemisphere or the Southern Hemisphere. -Display 88 kinds of constellations -"Cardboard" supported. ■Option "Planetarium VR" is equipped with a variety of options. 【constellations】 It appears constellation near the starry sky that looked up. 【Diurnal motion】 advance the time in 15-second intervals. 【Waterside】 view the starry sky in the waterside. 【Night】 Best in a dark place. 【Location】 Using a GPS, calculate the starry sky and the constellation position of the current location.

About

せみサウンド

Features
Read full description

「せみサウンド」は、日本の夏を彩る6種類のセミの鳴き声を楽しめるサウンドアプリです。 丸いボタンをタップするだけで鳴き声を再生。複数のセミを同時に鳴らして、自分だけの夏の森を作ることもできます。各セミのiボタンでは、特徴や見つけやすい時期、活動時間、観察のヒントを確認できます。 収録しているセミ ・アブラゼミ ・ミンミンゼミ ・クマゼミ ・ヒグラシ ・ツクツクボウシ ・ニイニイゼミ 無料版 ・最大2種類まで同時再生 ・各音源は1回再生 ・6種類すべての解説 ・バナー広告あり Pro版(買い切り) ・最大6種類まで同時再生 ・すべての音源を無限ループ ・自動ロック後もバックグラウンドで再生 ・広告を完全に非表示 ・購入の復元に対応 アカウント登録は不要です。

Screenshots

Planetarium VR4 screens
せみサウンド4 screens

Verdict

The call

The clearest difference is ads: Planetarium VR at none against せみサウンド's shown. せみサウンド's advantage is update cadence (every 2 weeks vs every 6 months). On price, in-app purchases, device support and iOS requirement 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. Planetarium VR sells 1 one-off in-app purchase and せみサウンド sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Planetarium VR ships an update every 6 months, せみサウンド every 2 weeks. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

Scorecard2 real differences · 8 level
Planetarium VR versus せみサウンド: the parameters behind the verdict, then further details
ParameterPlanetarium VRせみサウンド
PriceFreeFree
Rating3.0 (5 ratings) — better—
Positive reviews41.2% of reviews—
Number of ratings5 — better—
Update frequencyEvery 6 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size141 MB32 MB
Age rating4+4+
DeveloperTaosoftware Inc.ATSUSHI CHIBA

In-app purchases

1 purchases

Planetarium VR

One-time1
  • Solar system planets$1.99
1 purchases

せみサウンド

One-time1
  • セミサウンド Pro$0.29

Questions

Is Planetarium VR free?
Planetarium VR is free to download, with in-app purchases available.
Is せみサウンド free?
せみサウンド is free to download, with in-app purchases available.
Do Planetarium VR or せみサウンド have ads?
せみサウンド shows ads; Planetarium VR does not.
Which is updated more often, Planetarium VR or せみサウンド?
Planetarium VR ships an update every 6 months, and せみサウンド every 2 weeks. Most recently, Planetarium VR was updated on October 24, 2026 and せみサウンド on October 13, 2026.

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