RapidExposure vs 易占い
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RapidExposure
This app transforms your iPhone into a professional exposure meter. It continuously measures light and displays ISO, F-stop, and shutter speed values without needing to take a photo. You can adjust these settings and lock the exposure to save a reference image with the calculated values.
- Real-time exposure measurement
- Adjustable ISO, F-stop, and shutter speed
- Exposure lock and reference value saving
- History of saved exposure values
- Tap-to-adjust exposure on preview
- Detailed 1/3 step display mode
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This app will turn iPhone into exposure meter for cameras. It can continuously measure exposure value and indicate the information without releasing the shutter. It allows you to recalculate and indicate the shutter speed together with other ISO values and F values even during the measurement. The measurement is interrupted by the save button, and then write a row exposure value which iPhone automatically set into the image that iPhone had been taking, The image with the row exposure value is saved as a sample and displayed. It also displays the exposure value that the user has set. You can see the saved images on a list of images in the history window. You can adjust and rock the exposure on the tapped point of the preview screen. The exposure rock can be cancelled by the 'Auto' button. The shutter sound can be reduced by the volume button. However, it becomes the normal volume if it is set mute. At first the app puts high priority on ISO and F in exposure calculation. Under the exposure measurement, it indicates variable aperture stops (F-number) at a fixed shutter speed when you manually change the shutter speeds. Or, when you manually change the aperture stops (F-numbers), it indicates variable shutter speeds at a fixed aperture stop. If you change the ISO value, shutter speed or F-value changes depending on the mode at the time. The range of ISO vales, F values and shutter speeds are as follows. (In the new version, detail display mode is added in which F,ISO,SS values are changed by 1/3 step) ISO vales: "25","50","100","200","400","800","1600","3200","6400","12800","25600","51200" F values: "F0.7", "F1", "F1.4", "F2", "F2.8","F4", "F5.6", "F8", "F11", "F16","F22", "F32" shutter speeds: "60","30","15","8","4","2","1","1/2","1/4","1/8","1/15","1/30","1/60","1/125","1/250","1/500","1/1000","1/2000","1/4000","1/8000" ******** How to use: (1) Immediately after start-up, this application starts the exposure calculation automatically and it displays the values of ISO, F and SS in the wheel. (2) Exposure is recalculated in accordance with the subject that is reflected in the camera, the value of the SS will change accordingly. When you point the camera toward bright, the value of SS is reduced. Turning the camera to darker, the value of the SS will increase. (3) If you change the value of the ISO in the wheel, the value of the SS will change accordingly. Changing the value of F in the same manner, the value of the SS will change. Further, changing the value of the SS, the value of F will change. (4) If you tap the "Save" button, the exposure value displayed at that time is locked and a photo is taken. A reference exposure value that iPhone camera set to itself is written in the photo. (The reference value is different from that displayed in the wheel. It is not possible to set exposure value in the wheel to iPhone camera itself.) (5) If you tap the "measure" button, it restarts the exposure calculation and re-displays the values of ISO, F and SS. (6) If you tap the "History" button, the History window appears and the contents saved are listed. They are save date and time , photos and the exposure values you had set by the wheel when you save. (7) You can enlarge the photo by tapping it. (8) It changes to delete mode when you tap the "trash", delete mark appears in the photo that you tap. If you tap "Done", photos marked for deletion will be deleted. (9) **** This app uses OSS:AQGridView(Copyright(c) 2010-2011, Kobo Inc.) NOTE: However this app calculates ISO vale, F value and shutter speed based on the photos taken with the built-in camera, we are not able to guarantee the accuracy of these values.
易占い
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易は中国の古く周王朝の時代に確立した占いです。 周の成立は紀元前1046年ですから、易は少なくとも三千年以上も昔から活用されてきた、たいへん歴史のある占いであるといえます。 かの有名な諸葛孔明もその力を用いたように、時の有力者は軍師やブレーンのような位置づけとして易を活用してきました。 あなたも人生の岐路に立って方針を決めかねるような場合には、易に助言を求めてはいかがでしょうか。 きっとあなたの視点とは違った角度から物事に光を当ててくれることでしょう。 【主な機能】 1.占い 占的(占いの内容)を入力して、占いを実施できます。 2.過去の結果 過去の占いの結果を参照できます。さらにメモを残せますので、目標の進捗管理が可能です。 3.カレンダー 占いの結果をカレンダー上で確認することができます。 4.リスト 占いの結果やメモをリストとして保存することができます。リストは並べ替え機能やチェック機能を備えているので、様々な用途に活用できます。 5.原文表示機能 占いの結果を原文で表示することができます。 6.シェア機能 占いの結果をメール・LINE・Twitterを通してシェアすることができます。 7.八卦詳細 六十四卦を上卦・下卦の二つの八卦に分けて解析することができます。 8.結果手入力機能 占いの結果を手入力で記録することができます。 9.スケジュール機能 占いを定期的に実行して通知することができます。 10.検索機能 過去の占い・メモを検索することができます。
Screenshots
Verdict
The clearest difference is price: 易占い at Free against RapidExposure's $0.99. RapidExposure's advantage is ads (none vs shown) and iOS requirement (12.0 vs 16.0). On update cadence, 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
易占い is free to download; RapidExposure costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
RapidExposure ships an update every 2 months, 易占い monthly. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.
| Parameter | RapidExposure | 易占い |
|---|---|---|
| Price | $0.99 | Free — better |
| Positive reviews | 37.5% of reviews | — |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 9 MB | 20 MB |
| Age rating | 4+ | 17+ |
| Developer | HIROFUMI MARUO | Tetsutaro Yamamoto |
In-app purchases
RapidExposure
No in-app purchases
易占い
No in-app purchases









