TopLayout vs eYACHO Viewer 6
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TopLayout
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This application can communicate with a layout navigator LN Series. By using this, you can perform the layout work of 3 dimensional design data and as-build measurement of 3 dimensional point data. Layout navigator LN Series is pursuing the increase in efficiency of survey work and the ease of using compared with the conventional survey instrument. The update rate of data has realized 20 Hz. So the data delay to the motion of the prism is minimized and the response of guidance to a layout point becomes smooth. Moreover, it can be re-tracked quickly when it failed of tracking the prism. By carrying the self leveling, LN Series can also be used easily by user which is not used to handling of a survey instrument. Main Features of layout navigator LN Series: +Realization of simplification of operation by the limit to the function of layout work and as-build measurement. +Realization of the laborsaving by the measurement by oneself. +Realization of improvement of operational efficiency by the optimal sequence for each of layout work and as-build measurement. +Realization of simplification of instrument setup by the self leveling and visual information of operation steps. https://www.topconpositioning.asia/jp/en/products/brand/topcon/ln-150/ To use this application, the use of location information should be enabled. This application can be used on devices with iOS 16 or higher. Please note that operation on all devices is not guaranteed. Tested Devices: +iPhone 14 Plus(iOS 16.1) +iPhone 14 Pro Max(iOS 17.0.2) +iPhone 16 Pro Max(iOS 18.4) The instruction manual can be downloaded from the TOPCON website.
eYACHO Viewer 6
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「eYACHO Viewer」は、「eYACHO for Business」を合わせてインストールして頂くと便利にお使いいただけます。 「eYACHO for Business」上の文書共有中の画面から、「eYACHO Viewer」で同じ文書の同じページを開くことができます。 「eYACHO for Business」とほぼ同等の機能があるので、Split Viewを利用するとデジタル野帳アプリ「eYACHO for Business」と合わせて、切り替えながら使うことで次のような操作が可能となります。 ・閲覧しながらメモ書き ・会議中に現在のページを参照しながら、別のページを修正 ・別々のページを同時に閲覧 このほかにも文書操作の用途が大きく広がります。 * eYACHO Viewerのご利用には専用のアカウントが必要です。 ■ 動作環境 ■ <OS> OS 13.6 以降 M1 Mac
Screenshots
Verdict
The clearest difference is update cadence: eYACHO Viewer 6 at monthly against TopLayout's every 3 months. On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
TopLayout ships an update every 3 months, eYACHO Viewer 6 monthly. The most recent releases landed on May 18, 2026 and September 17, 2026 respectively.
| Parameter | TopLayout | eYACHO Viewer 6 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 13.6 — better |
| Further details — not scored | ||
| Size | 47 MB | 276 MB |
| Age rating | 4+ | 17+ |
| Developer | TOPCON CORPORATION | MetaMoJi Corporation |
In-app purchases
TopLayout
No in-app purchases
eYACHO Viewer 6
No in-app purchases
Questions
Is TopLayout free?
Is eYACHO Viewer 6 free?
Do TopLayout or eYACHO Viewer 6 have ads?
Which is updated more often, TopLayout or eYACHO Viewer 6?
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