Best Topo Reader Apps

250+ iOS apps curated and reviewed

4.1 avg rating
20 free apps
Updated October 2026

With an average user rating of 4.1★, the topo reader category is one of the App Store's strongest. Browse all 250+ apps we track, sorted so the most loved ones surface first.

Compare top Topo Reader Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Topo ReaderTopo ReaderFree4.6★ (181)NoYesNov 2026
2E-book Reader – reading.fmE-book Reader – reading.fmFree—NoNoAug 2026
3NextPhase ReaderNextPhase ReaderFree—NoYesOct 2026
4Marble: EPUB & PDF ReaderMarble: EPUB & PDF ReaderFree—NoNoSep 2026
5ReadEra – book reader pdf epubReadEra – book reader pdf epubFree4.2★ (241)NoNoNov 2026
6Readorys:Story PicksReadorys:Story PicksFree4.6★ (99)NoYesNov 2026
7Document Reader: PDF, DOC, PPTDocument Reader: PDF, DOC, PPTFree—YesNoMay 2026
8iPublishCentral ReaderiPublishCentral ReaderFree3.7★ (160)NoNoNov 2026

Top Picks for Topo Reader

Topo Reader#1

Topo Reader by Delcartes LLC

USGS Topographical Maps
Editor's Choice
🗺️ Navigation
4.6(181 ratings)
FreeIn-App Purchases
Topo Reader screenshot 1
Topo Reader screenshot 2
Topo Reader screenshot 3
Topo Reader screenshot 4

Access and use detailed USGS topographical maps offline, even historical versions. Import your own geospatial PDF maps for navigation, route planning, and distance measurement. Ideal for outdoor adventures and geographical exploration.

More Topo Reader apps to explore

FAQ about Topo Reader

What are the best topo reader apps for iPhone?
Topo Reader tops our topo reader apps ranking as of October 2026, with a 4.6-star average from 181 App Store ratings, and it's free to download.
Yes — 20 of the top topo reader apps we rank are free to download, including Topo Reader and E-book Reader – reading.fm.
Topo Reader has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 250+ topo reader apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.