Comparison

PQI Air Pen+ vs VoltKeep

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

Head to head
About

PQI Air Pen+

Wirelessly access and manage files stored on a PQI Air Pen WiFi Flash Drive. Browse documents, images, and audio/video files, with playback support for media. Configure WiFi settings and perform device resets.

Highlights
  • Browse remote PQI Air Pen contents
  • Browse local device files
  • Download files to local storage
  • Browse and play media files
  • Supports various document formats
  • Configure WiFi settings
Read full description

This is the app designed for PQI Air Pen (a WiFi Flash Drive). Users can browse the files from PQI Air Pen wirelessly through WiFi connection. Features: 1. Browse remote PQI Air Pen contents. 2. Browse local contents in the App. 3. Download files from PQI Air Pen to local directory. 4. Browse all image files from PQI Air Pen. 5. Browse all audio files from PQI Air Pen, and select a single file to playback the audio content. 6. Browse all video files from PQI Air Pen, and select a single file to playback the video content. 7. Supported file formats: Document: .pdf, .txt, .doc, .docx, .xls, .xlsx, .ppt, .pptx Image: .jpg, .png Audio: .mp3, .wav, .aif Video: .mp4, .mov 8. Setting WiFi password, channel, and SSID, and perform reboot and factory reset.

About

VoltKeep

Features
Read full description

VoltKeepは、Tesla公式のFleet Telemetryを使って走行・充電・バッテリーをリアルタイムに記録するダッシュボードアプリです。車両へのポーリングを行わないためバッテリーに優しく、走行データはエンドツーエンド暗号化であなただけのものになります。 ■ 主な機能(無料) ・リアルタイムダッシュボード: バッテリー残量・航続距離・車両の現在地・車内外の温度 ・タイムライン: トリップ(ルート地図・距離・電費・速度ヒートマップ)と駐車・充電を時系列で自動記録 ・充電履歴: 充電セッションを自動検出し、バッテリー%・kWh・充電速度を表示 ・電費分析: Wh/kmの推移と日次サマリー ・セントリーモードとバッテリードレインの記録 ■ VoltKeep Pro(7日間無料トライアル) ・スーパーチャージャー充電履歴: サイト名と実際の請求額をタイムラインに表示。電気代は実費で自動補正 ・全期間の走行履歴(無料版は直近7日) ・月次レポート&AI運転分析: 1ヶ月のルートマップ、ドライブカレンダー、AIによる電費の深掘り ・バッテリー健康度の長期トレンドとPDFレポート ・充電予約コマンド、複数車両、CSVエクスポート ■ プライバシー・セキュリティ ・走行データはX25519+AES-256-GCMでエンドツーエンド暗号化。サーバー上でも中身は読めません ・走行・充電データを第三者に販売・共有することはありません ■ ご利用に必要なもの ・Teslaアカウント ・Fleet Telemetry対応車両 ※本アプリはTesla, Inc.が提供する公式アプリではありません。TeslaはTesla, Inc.の商標です。 利用規約(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

PQI Air Pen+4 screens
VoltKeep3 screens

Verdict

The call

The clearest difference is in-app purchases: PQI Air Pen+ at none against VoltKeep's 2. PQI Air Pen+ also leads on iOS requirement (8.0 vs 17.0). VoltKeep's advantage is update cadence (every 3 days vs every 5 weeks). On price, ads 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. VoltKeep sells 2 in-app purchases, starting at $4.99 per month. PQI Air Pen+ asks for nothing beyond the download.

UpkeepUpdate frequency

PQI Air Pen+ ships an update every 5 weeks, VoltKeep every 3 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
PQI Air Pen+ versus VoltKeep: the parameters behind the verdict, then further details
ParameterPQI Air Pen+VoltKeep
PriceFreeFree
Rating3.0 (1 ratings) — better—
Positive reviews16.7% of reviews—
Number of ratings1 — better—
Update frequencyEvery 5 weeksEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS8.0 — better17.0
Further details — not scored
Size28 MB74 MB
Age rating4+4+
DeveloperPower Quotient International Co., Ltd.Yuto Furudate

In-app purchases

None

PQI Air Pen+

No in-app purchases

2 purchases

VoltKeep

Subscriptions2
  • Monthly Plan7 Days trial$4.991 Month
  • Yearly Plan7 Days trial$49.991 Year

Questions

Is PQI Air Pen+ free?
PQI Air Pen+ is free to download, with no in-app purchases.
Is VoltKeep free?
VoltKeep is free to download, with in-app purchases available.
Do PQI Air Pen+ or VoltKeep have ads?
Neither PQI Air Pen+ nor VoltKeep shows ads.
Which is updated more often, PQI Air Pen+ or VoltKeep?
PQI Air Pen+ ships an update every 5 weeks, and VoltKeep every 3 days. Most recently, PQI Air Pen+ was updated on November 1, 2026 and VoltKeep on October 31, 2026.

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